Re: [Openvpn-devel] How to check is OpenVPN port is open

2010-01-12 Thread Lucas Mocellin
I have everything filtered. and the problem is that I should this from the server, and that's not what I need, I need to check from the client if the server is running. But probably this server works as NMAP or NC, look at this part of man nmap: UDP scan works by sending an empty (no data) UDP hea

Re: [Openvpn-devel] How to check is OpenVPN port is open

2010-01-11 Thread Lucas Mocellin
Hello, again I fell in this problem, I must solve this now, so if someone has a better idea than trying to reproduce the OpenVPN protocol begin and see if there is any answer, I will have to figure out how to send the OpenVPN protocol by UDP manually. I would like to see if there is a simpler man

Re: [Openvpn-devel] How to check is OpenVPN port is open

2009-10-29 Thread Lucas Mocellin
Hi again, I forgot to say that I'm working with UDP, and all the problem is around this protocol connectionless. I tried to sniff and redo the "connection start", but always the packages are different but actually, I didn't figured it out completely, and probably I won't studi the OpenVPN protoco

Re: [Openvpn-devel] How to check is OpenVPN port is open

2009-10-28 Thread Karl O. Pinc
On 10/28/2009 02:24:12 PM, Lucas Mocellin wrote: > Hi all, > > briefly: I'm helping in the development of an educational software to > apply > online tests. The client will connect to the server through OpenVPN > to > perform the test. I would like to check if the OpenVPN port is alive > and > ac

[Openvpn-devel] How to check is OpenVPN port is open

2009-10-28 Thread Lucas Mocellin
Hi all, briefly: I'm helping in the development of an educational software to apply online tests. The client will connect to the server through OpenVPN to perform the test. I would like to check if the OpenVPN port is alive and accepting connections (check if there is port filtering, and so on.. )